I was wondering if anybody has routed the exhaust under the car down the trans tunnel below the prop?
I am thinking of having rear exit exhaust rather than side exit.
My only worry is that the exhaust will be right next to the fuel line, would this be a problem? i would heat wrap the exhaust.
I think westfield do it on their v8 powered cars.
Tommy
quote:
Originally posted by tomgregory2000
My only worry is that the exhaust will be right next to the fuel line, would this be a problem?
Tommy
A question that i asked myself a few weeks ago, but where would you put the silencer? - Under the fuel tank?? - Er... i dont think i would.
I thought about it, and even thought about compartmentalising the trans tunnel to take fuel etc separately from the prop and exhaust, but the dangers
of having the muffler under (or over) the fuel tank carrys considerable risk, particularly in the event of a rupture following rear-ending. Thats the
biggest hazard that i saw. That and melting the seats next to the trans tunnel!
why would it fail sva/iva?
quote:
Originally posted by MakeEverything
A question that i asked myself a few weeks ago, but where would you put the silencer? - Under the fuel tank?? - Er... i dont think i would.
I thought about it, and even thought about compartmentalising the trans tunnel to take fuel etc separately from the prop and exhaust, but the dangers of having the muffler under (or over) the fuel tank carrys considerable risk, particularly in the event of a rupture following rear-ending. Thats the biggest hazard that i saw. That and melting the seats next to the trans tunnel!
quote:
Originally posted by tomgregory2000
quote:
Originally posted by MakeEverything
A question that i asked myself a few weeks ago, but where would you put the silencer? - Under the fuel tank?? - Er... i dont think i would.
I thought about it, and even thought about compartmentalising the trans tunnel to take fuel etc separately from the prop and exhaust, but the dangers of having the muffler under (or over) the fuel tank carrys considerable risk, particularly in the event of a rupture following rear-ending. Thats the biggest hazard that i saw. That and melting the seats next to the trans tunnel!
My seat has the silincer next to the fuel tank and the parents cars do as well,my motorbike has the the fuel tank ontop of the the engine
Theres also a reson that factory cars have exhausts NEXT TO the tank and not under it.
Heat rises....
Also, the slightest leak would be catastrophic.
BigRich has done it on his car & it looks like a very nice job too
quote:
Originally posted by blakep82
why would it fail sva/iva?
^ ah i see, but if you had a fuel pipe down one side of the tunnel, and the exhaust down the other side, with the fuel pipe lower than the exhaust, should be alright shouldn't it?
personally IMHO if i was an SVA inspector i would fail it, most tunnels are less than 4" across and you say that you could put the fuel lines
below the exhaust but the tunnel is a closed unit in some cars and even if you had the bottom open all the fibreglass would become very hot in the
cockpit. what if you role the car in an accident and the fuel line breaks in the tunnel for whatever reason you would have fuel pouring out onto a red
hot exhaust (NO THANKS!) IMHO its just toooo risky, i certainly wouldn't do it, remember you are more than likely going to have to run brake
lines and wiring through the tunnel as well, as soon as i read the post the first thought in my head was
THIS IS A BAD IDEA! just my 2p's worth but i think its the right way of thinking and the safest.
another thing that has just popped into my head is, how are you going to position the exhaust aroung the gearbox, i don't know about your car but
i only have a couple of inches either side of my box, no space for an exhaust in there.
[Edited on 29/3/09 by omega0684]
quote:
Originally posted by omega0684
personally IMHO if i was an SVA inspector i would fail it, most tunnels are less than 4" across and you say that you could put the fuel lines below the exhaust but the tunnel is a closed unit in some cars and even if you had the bottom open all the fibreglass would become very hot in the cockpit. what if you role the car in an accident and the fuel line breaks in the tunnel for whatever reason you would have fuel pouring out onto a red hot exhaust (NO THANKS!) IMHO its just toooo risky, i certainly wouldn't do it, remember you are more than likely going to have to run brake lines and wiring through the tunnel as well, as soon as i read the post the first thought in my head was
THIS IS A BAD IDEA!
another thing that has just popped into my head is, how are you going to position the exhaust aroung the gearbox, i don't know about your car but i only have a couple of inches either side of my box, no space for an exhaust in there.
[Edited on 29/3/09 by omega0684]
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but isn't that how production cars are?
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ok, so some will run under the floor rather than in the tunnel
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as long as everything's secure and components are fit for the job, i don't think running an exhaust through there is a problem
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Components should not be positioned close to exhaust manifolds and pipes, in a way that could pose a fire hazard in the case of an accident
Why do you want to route the exhaust under the car?
As you say They do it on Westfield’s,. So try and find someone that will let you look at how the are done and copy that method. How much ground
clearance have you got?
Ive just got the dutton, and the pipe on it runs under the car on one side. When you look under the car, it is quite clear what would be the first
thing to be ripped off at the first speed hump. It breaks the line of the underside of the car, and takes away some ground clearance.
I wouldnt route it with fuel lines at all.
Would it not be possible to route the fuel line(s) down the side of the cabin? (suitably shielded). That way it gives you a bit more room to route the exhaust.
quote:
Originally posted by Badger_McLetcher
Would it not be possible to route the fuel line(s) down the side of the cabin? (suitably shielded). That way it gives you a bit more room to route the exhaust.
If you want a rear exit exhaust, then run the exhaust exactly the same as a side exit, have the muffler where is should be, then run the tip of the exhaust out the back instead of the side. (under the axle) Thats what one of the kit manufactures do down here, makes it alot quieter for people in the car.
